*{margin:0;padding:0;box-sizing:border-box}:root{--navy:#1e3a5f;--navy-deep:#152c4a;--navy-darker:#0f2035;--navy-light:#24456e;--navy-surface:#1a3455;--amber:#f59e0b;--amber-light:#fbbf24;--amber-dim:rgba(245,158,11,0.12);--white:#ffffff;--gray:#94a3b8;--gray-light:#cbd5e1;--gray-dark:#64748b;--success:#34d399;--locked:#7c8da4;--font-brand:"Space Grotesk",sans-serif;--font-body:"Inter",-apple-system,sans-serif}body{background:var(--navy-darker);color:var(--white);font-family:var(--font-body)}::selection{background:rgba(245,158,11,.25);color:var(--white)}textarea::placeholder{color:var(--gray-dark)}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:var(--navy-darker)}::-webkit-scrollbar-thumb{background:var(--navy-light);border-radius:4px}.landing{min-height:100vh;background:linear-gradient(165deg,var(--navy-darker) 0,var(--navy-deep) 40%,var(--navy) 100%);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px 20px;position:relative;overflow:hidden}.landing-grid{inset:0;background-image:linear-gradient(rgba(245,158,11,.025) 1px,transparent 0),linear-gradient(90deg,rgba(245,158,11,.025) 1px,transparent 0);background-size:72px 72px}.landing-glow,.landing-grid{position:absolute;pointer-events:none}.landing-glow{top:-300px;left:50%;transform:translateX(-50%);width:900px;height:900px;background:radial-gradient(circle,rgba(245,158,11,.04) 0,transparent 60%)}.landing-content{max-width:700px;text-align:center;position:relative;z-index:1;animation:fadeUp .7s ease forwards}@keyframes fadeUp{0%{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}.landing-logo{display:inline-flex;align-items:center;gap:10px;margin-bottom:52px;padding:10px 24px;border-radius:40px;border:1px solid rgba(245,158,11,.15);background:rgba(245,158,11,.05)}.landing-logo svg{height:28px;width:auto}.landing h1{font-family:var(--font-brand);font-size:clamp(38px,5.5vw,60px);font-weight:700;line-height:1.12;margin-bottom:24px;letter-spacing:-.02em}.landing h1 .accent{color:var(--amber)}.landing .subtitle{font-size:17px;color:var(--gray);line-height:1.75;margin-bottom:16px;max-width:540px;margin-left:auto;margin-right:auto}.landing .tagline{font-size:13px;color:var(--gray-dark);margin-bottom:44px;letter-spacing:.3px}.btn-row{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}.btn{padding:13px 26px;border-radius:10px;font-family:var(--font-body);font-size:15px;cursor:pointer;transition:all .2s ease;display:inline-flex;align-items:center;gap:8px;border:none;font-weight:600;letter-spacing:.2px;text-decoration:none}.btn-primary{background:var(--amber);color:var(--navy-darker)}.btn-primary:hover{background:var(--amber-light);transform:translateY(-1px);box-shadow:0 4px 20px rgba(245,158,11,.25)}.btn-secondary{background:transparent;color:var(--white);border:1px solid var(--gray-dark)}.btn-secondary:hover{background:var(--navy-surface);border-color:var(--gray)}.btn-ghost{background:transparent;color:var(--amber);font-weight:600;padding:8px 14px;font-size:13px;border:none;cursor:pointer}.stats{margin-top:68px;display:flex;gap:56px;justify-content:center;flex-wrap:wrap}.stat-num{font-family:var(--font-brand);font-size:30px;color:var(--amber);font-weight:700}.stat-label{font-size:12px;color:var(--gray-dark);margin-top:4px;letter-spacing:.5px;font-weight:500}.topnav{display:flex;align-items:center;justify-content:space-between;padding:14px 32px;border-bottom:1px solid rgba(255,255,255,.06);background:var(--navy-deep);position:sticky;top:0;z-index:100}.topnav-brand svg{height:22px;width:auto}.topnav-right{display:flex;align-items:center;gap:16px}.topnav-right .user-name{color:var(--gray);font-size:14px;font-weight:500}.main{max-width:1080px;margin:0 auto;padding:36px 24px}.welcome h1{font-family:var(--font-brand);font-size:26px;font-weight:700;margin-bottom:8px;letter-spacing:-.01em}.welcome p{color:var(--gray);font-size:15px;margin-bottom:36px}.card{background:var(--navy-deep);border:1px solid rgba(255,255,255,.06);border-radius:14px;padding:28px;transition:all .3s ease}.card.hoverable:hover{border-color:rgba(245,158,11,.2);transform:translateY(-2px);box-shadow:0 8px 32px rgba(0,0,0,.25)}.banner{margin-bottom:32px;background:linear-gradient(135deg,var(--navy-deep) 0,var(--navy-surface) 100%);border-color:rgba(245,158,11,.1)}.banner-inner{display:flex;align-items:flex-start;gap:16px;flex-wrap:wrap}.banner-icon{font-size:28px}.banner-text{flex:1;min-width:250px}.banner-text h3{color:var(--amber);font-family:var(--font-brand);font-size:17px;margin-bottom:6px;font-weight:700}.banner-text p{color:var(--gray);font-size:14px;line-height:1.6}.badge{padding:4px 12px;border-radius:20px;font-size:11px;font-weight:600;letter-spacing:.5px;text-transform:uppercase;display:inline-flex;align-items:center;gap:6px}.badge-live{background:rgba(52,211,153,.12);color:var(--success);border:1px solid rgba(52,211,153,.2)}.badge-live:before{content:"";width:6px;height:6px;border-radius:50%;background:var(--success);animation:pulse 2s ease infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.4}}.badge-locked{background:rgba(124,141,164,.12);color:var(--locked);border:1px solid rgba(124,141,164,.2)}.tabs{gap:2px;margin-bottom:32px;border-bottom:1px solid rgba(255,255,255,.06)}.tab,.tabs{display:flex}.tab{background:transparent;border:none;border-bottom:2px solid transparent;color:var(--gray-dark);padding:12px 20px;font-family:var(--font-body);font-size:14px;font-weight:500;cursor:pointer;transition:all .2s ease;align-items:center;gap:8px}.tab.active{border-bottom-color:var(--amber);color:var(--white)}.tab:hover{color:var(--gray-light)}.tab-content{display:none}.tab-content.active{display:block;animation:fadeUp .3s ease}.courses-grid{display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(340px,1fr))}.course-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:16px}.course-icon{font-size:32px}.course-title{font-family:var(--font-brand);font-size:21px;font-weight:700;margin-bottom:8px}.course-desc{color:var(--gray);font-size:14px;line-height:1.6;margin-bottom:16px}.course-tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}.course-tag{padding:5px 11px;border-radius:6px;background:rgba(255,255,255,.04);color:var(--gray-dark);font-size:12px;font-weight:500}.course-meta{display:flex;gap:16px;color:var(--gray-dark);font-size:13px;border-top:1px solid rgba(255,255,255,.04);padding-top:16px}.problem-card{max-width:720px}.problem-question{background:var(--navy-surface);border-radius:12px;padding:24px;margin-bottom:24px;border-left:3px solid var(--amber)}.problem-question p{color:var(--white);font-size:17px;font-family:var(--font-brand);line-height:1.55;font-weight:500}.problem-list-item{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px}.problem-title-row{display:flex;align-items:center;gap:12px;margin-bottom:8px}.problem-title-row h3{font-family:var(--font-brand);font-size:20px;font-weight:700}.problem-meta{display:flex;gap:16px;color:var(--gray-dark);font-size:13px}textarea.answer-box{width:100%;background:var(--navy-darker);border:1px solid rgba(255,255,255,.08);border-radius:10px;padding:16px;color:var(--white);font-family:var(--font-body);font-size:14px;line-height:1.6;resize:vertical;outline:none}textarea.answer-box:focus{border-color:rgba(245,158,11,.4)}.answer-label{color:var(--gray);font-size:13px;display:block;margin-bottom:8px;font-weight:500}.hint-box{margin-top:16px;padding:16px;border-radius:10px;background:var(--amber-dim);border:1px solid rgba(245,158,11,.15);color:var(--amber-light);font-size:14px;line-height:1.6;display:none}.hint-box.visible{display:block}.success-box{padding:24px;border-radius:12px;background:rgba(52,211,153,.08);border:1px solid rgba(52,211,153,.15);display:none}.success-box.visible{display:block}.success-box h4{color:var(--success);font-size:16px;margin-bottom:8px;font-family:var(--font-brand);font-weight:700}.success-box p{color:var(--gray);font-size:14px;line-height:1.6}.problem-note{color:var(--gray-dark);font-size:13px;margin-top:24px}.resources-grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}.resource-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:12px}.resource-icon{font-size:28px}.resource-title{color:var(--white);font-size:15px;margin-bottom:6px;font-family:var(--font-brand);font-weight:700}.resource-desc{color:var(--gray-dark);font-size:13px;line-height:1.5}.community-card{max-width:600px}.community-icon{font-size:48px;display:block;margin-bottom:16px}.community-card h3{font-family:var(--font-brand);font-size:24px;margin-bottom:8px;font-weight:700}.community-card p{color:var(--gray);font-size:15px;line-height:1.7;margin-bottom:8px}.community-card .small{color:var(--gray-dark);font-size:13px;margin-bottom:24px}.footer{margin-top:80px;padding-top:24px;border-top:1px solid rgba(255,255,255,.04);text-align:center;color:var(--gray-dark);font-size:12px;padding-bottom:32px}@media (max-width:600px){.topnav{padding:12px 16px}.main{padding:24px 16px}.courses-grid,.resources-grid{grid-template-columns:1fr}.stats{gap:32px}.btn-row{flex-direction:column;align-items:center}.tabs{overflow-x:auto}}@font-face{font-family:Space Grotesk;font-style:normal;font-weight:300 700;font-display:swap;src:url(/_next/static/media/e1aab0933260df4d-s.woff2) format("woff2");unicode-range:u+0102-0103,u+0110-0111,u+0128-0129,u+0168-0169,u+01a0-01a1,u+01af-01b0,u+0300-0301,u+0303-0304,u+0308-0309,u+0323,u+0329,u+1ea0-1ef9,u+20ab}@font-face{font-family:Space Grotesk;font-style:normal;font-weight:300 700;font-display:swap;src:url(/_next/static/media/b7387a63dd068245-s.woff2) format("woff2");unicode-range:u+0100-02ba,u+02bd-02c5,u+02c7-02cc,u+02ce-02d7,u+02dd-02ff,u+0304,u+0308,u+0329,u+1d00-1dbf,u+1e00-1e9f,u+1ef2-1eff,u+2020,u+20a0-20ab,u+20ad-20c0,u+2113,u+2c60-2c7f,u+a720-a7ff}@font-face{font-family:Space Grotesk;font-style:normal;font-weight:300 700;font-display:swap;src:url(/_next/static/media/36966cca54120369-s.p.woff2) format("woff2");unicode-range:u+00??,u+0131,u+0152-0153,u+02bb-02bc,u+02c6,u+02da,u+02dc,u+0304,u+0308,u+0329,u+2000-206f,u+20ac,u+2122,u+2191,u+2193,u+2212,u+2215,u+feff,u+fffd}@font-face{font-family:Space Grotesk Fallback;src:local("Arial");ascent-override:89.71%;descent-override:26.62%;line-gap-override:0.00%;size-adjust:109.69%}.__className_dd5b2f{font-family:Space Grotesk,Space Grotesk Fallback;font-style:normal}.__variable_dd5b2f{--font-space-grotesk:"Space Grotesk","Space Grotesk Fallback"}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(/_next/static/media/ba9851c3c22cd980-s.woff2) format("woff2");unicode-range:u+0460-052f,u+1c80-1c8a,u+20b4,u+2de0-2dff,u+a640-a69f,u+fe2e-fe2f}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(/_next/static/media/21350d82a1f187e9-s.woff2) format("woff2");unicode-range:u+0301,u+0400-045f,u+0490-0491,u+04b0-04b1,u+2116}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(/_next/static/media/c5fe6dc8356a8c31-s.woff2) format("woff2");unicode-range:u+1f??}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(/_next/static/media/19cfc7226ec3afaa-s.woff2) format("woff2");unicode-range:u+0370-0377,u+037a-037f,u+0384-038a,u+038c,u+038e-03a1,u+03a3-03ff}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(/_next/static/media/df0a9ae256c0569c-s.woff2) format("woff2");unicode-range:u+0102-0103,u+0110-0111,u+0128-0129,u+0168-0169,u+01a0-01a1,u+01af-01b0,u+0300-0301,u+0303-0304,u+0308-0309,u+0323,u+0329,u+1ea0-1ef9,u+20ab}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(/_next/static/media/8e9860b6e62d6359-s.woff2) format("woff2");unicode-range:u+0100-02ba,u+02bd-02c5,u+02c7-02cc,u+02ce-02d7,u+02dd-02ff,u+0304,u+0308,u+0329,u+1d00-1dbf,u+1e00-1e9f,u+1ef2-1eff,u+2020,u+20a0-20ab,u+20ad-20c0,u+2113,u+2c60-2c7f,u+a720-a7ff}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(/_next/static/media/e4af272ccee01ff0-s.p.woff2) format("woff2");unicode-range:u+00??,u+0131,u+0152-0153,u+02bb-02bc,u+02c6,u+02da,u+02dc,u+0304,u+0308,u+0329,u+2000-206f,u+20ac,u+2122,u+2191,u+2193,u+2212,u+2215,u+feff,u+fffd}@font-face{font-family:Inter Fallback;src:local("Arial");ascent-override:90.44%;descent-override:22.52%;line-gap-override:0.00%;size-adjust:107.12%}.__className_f367f3{font-family:Inter,Inter Fallback;font-style:normal}.__variable_f367f3{--font-inter:"Inter","Inter Fallback"}